Someone spray-painted the word "LIES" on the chunk of rock earlier this week. Plymouth Rock is engraved with "1620" to mark the Pilgrims' arrival in the New World.

The vandal or vandals also defaced the granite walls of the landmark's sunken enclosure with an obscene figure, the phrase "For a drug filled world" and the letter A inside a circle similar to the anarchist symbol.

A worker for the state Department of Conservation and Recreation removed the graffiti Tuesday morning.

Department spokesman Bill Hickey says it's not uncommon for the landmark to be vandalized.